Phase-shift keying (PSK) is a digital modulation scheme that conveys data by changing, or modulating, the phase of a reference signal (the carrier wave)

The plan for PSK31 (click to hear what PSK sounds like) activity has always been (since PSK31 started) to concentrate activity starting from the bottom edge of the IARU RTTY bandplan, expanding upwards as activity increased. The exception is in the 10 meters band in order to give non full privileges ham to meet. It was defined as 150 Hz above it. Keep in mind that all you need is about 100 Hz as channel separtion.

These recommended frequencies are in accordance with the IARU bandplan for region 1. There may be differences for regions 2 and 3.

COMMON PSK31 FREQUENCIES

1838.150
3580.150
7035.15 for region 1 and region 3, and 7080.15 for region 2 *
10142.150
14070.150
18100.150
21080.150 (although most activity can be found 10 kHz lower)
24920.150
28120.150

There are several versions of PSK software out there. Below are just a few.


	DDANPSK Version 2.1 By Jesper OZ5PCNPSK Version 2.1 By Jesper OZ5PC
	DIGIPAN. Version 2.0 By Skip KH6TY VERY POPULAR
	DigiTalk by Skip KH6TY A PSK31 Software designed for blind, or impaired sighted operators
	DigiPic by Skip KH6TY
	PSK-PAL. By Erik VK7AAB Another interesting PSK software. 10th March 2001 Version Upto 3 Channels
	WINPSK . Version 2.10 By Moe Wheatley AE4JY. Windows PSK Software
	W1SQLPSK. By Joe W1SQL An Interesting New Psk Monitor Upto 20 Ch !! Plus Logging Software
	WINWARBLER .... By David AA6YQ. A DXLABS Software For PSK and RTTY.
	ZAKANAKA.... Ver 1.24 By Bob Furzer K4CY. Excellent PSK software with MMTTY RTTY engine support

Here are some addition PSK software and screen shots to help you decide which one is best for you. This is my personal favorite; Digital Master 780 is embedded in absolutely amazing Ham Radio Deluxe software suite. I just think this program designed by Peter PH1PH and Simon HB9DRV is a ham radio operators best friend. The developers offer it as a free download. I liked it so much I bought the new HRD 6.0 Pre Release.

Digital Master 780

The HRD Logbook feature - also built into the HRD suite.

Another great PSK program is DigiPan. It works great and uses much less computer resources than others and it only takes a short time to get it set-up. Below are a couple screen shots

Download DigiPan 2.0 (700K)